NGC 7752 and NGC 7753

NGC 7752 and NGC 7753 are a pair of galaxies approximately 272 million light-years away in the constellation Pegasus. They were discovered by R. J. Mitchell on 22 November 1854.^[3]

NGC 7752 / 7753
NGC 7753 (big) and 7752 (small, bottom right), imaged by the Hubble Space Telescope
Observation data (J2000 epoch)
Constellation	Pegasus
Right ascension	23h 46m 58.5s / 23h 47m 04.8s[1]
Declination	+29° 27′ 32″ / +29° 29′ 00″[1]
Heliocentric radial velocity	5072 ± 5 / 5168 ± 6 km/s[1]
Distance	272 Mly[2]
Apparent magnitude (V)	15.0 / 12.8[1]
Characteristics
Type	I0 / SAB(rs)bc[1]
Apparent size (V)	0.8′ × 0.5′ / 3.3′ × 2.1′[1]
Other designations
UGC 12779 / 12780,[1] PGC 72382 / 72387,[1] Arp 86[1]

NGC 7753 is the primary galaxy. It is a barred spiral galaxy with a small nucleus. NGC 7752 is the satellite galaxy of NGC 7753. It is a barred lenticular galaxy that is apparently attached to one of NGC 7753's spiral arms. They resemble the Whirlpool Galaxy (M51A) and its satellite NGC 5195 (M51B).

Supernovae

Five supernovae have been observed in NGC 7753:

• SN 2006A (type unknown, mag. 18.1) was discovered by Tom Boles on 2 January 2006.^[4][5]
• SN 2006ch (type Ia, mag. 16.5) was discovered by Kōichi Itagaki on 9 May 2006.^[6][7]
• SN 2013Q (type Ia, mag. 17.5) was discovered by Zhijian Xu and Xing Gao, and independently by Alessandro Dimai, on 25 January 2013.^[8][9]
• SN 2015ae (type II, mag. 17.3) was discovered by Kōichi Itagaki on 6 August 2015.^[10]
• SN 2025kyg (type Ia, mag. 15.7277) was discovered by the Automatic Learning for the Rapid Classification of Events (ALeRCE) on 21 May 2025.^[11]

See also

• Dwingeloo 1
• Dwingeloo 2
• List of NGC objects (7001–7840)